Root Waving and Skewing - Unexpectedly in Micro-G

dc.contributor.utaustinauthorRoux, Stanley J.en_US
dc.creatorRoux, Stanley J.en_US
dc.date.accessioned2016-10-28T19:49:30Z
dc.date.available2016-10-28T19:49:30Z
dc.date.issued2012-12en_US
dc.description.abstractGravity has major effects on both the form and overall length of root growth. Numerous papers have documented these effects (over 300 publications in the last 5 years), the most well-studied being gravitropism, which is a growth re-orientation directed by gravity toward the earth's center. Less studied effects of gravity are undulations due to the regular periodic change in the direction root tips grow, called waving, and the slanted angle of growth roots exhibit when they are growing along a nearly-vertical surface, called skewing. Although diverse studies have led to the conclusion that a gravity stimulus is needed for plant roots to show waving and skewing, the novel results just published by Paul et al. (2012) reveal that this conclusion is not correct. In studies carried out in microgravity on the International Space Station, the authors used a new imaging system to collect digital photographs of plants every six hours during 15 days of spaceflight. The imaging system allowed them to observe how roots grew when their orientation was directed not by gravity but by overhead LED lights, which roots grew away from because they are negatively phototropic. Surprisingly, the authors observed both skewing and waving in spaceflight plants, thus demonstrating that both growth phenomena were gravity independent. Touch responses and differential auxin transport would be common features of root waving and skewing at 1-g and micro-g, and the novel results of Paul et al. will focus the attention of cell and molecular biologists more on these features as they try to decipher the signaling pathways that regulate root skewing and waving.en_US
dc.description.departmentMolecular Biosciencesen_US
dc.description.sponsorshipen_US
dc.identifierdoi:10.15781/T2CN6Z256
dc.identifier.citationRoux, Stanley J. "Root waving and skewing-unexpectedly in micro-g." BMC plant biology, Vol. 12, No. 1 (Dec., 2012): 1.en_US
dc.identifier.doi10.1186/1471-2229-12-231en_US
dc.identifier.issn1471-2229en_US
dc.identifier.urihttp://hdl.handle.net/2152/43150
dc.language.isoEnglishen_US
dc.relation.ispartofen_US
dc.relation.ispartofserialBMC Plant Biologyen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.rights.restrictionOpenen_US
dc.subjectarabidopsisen_US
dc.subjectauxinen_US
dc.subjectcytoskeletonen_US
dc.subjectextracellular atpen_US
dc.subjectinternational spaceen_US
dc.subjectstationen_US
dc.subjectrootsen_US
dc.subjectauxin-transporten_US
dc.subjectarabidopsisen_US
dc.subjectgravitropismen_US
dc.subjectresponsesen_US
dc.subjectatpen_US
dc.subjectplant sciencesen_US
dc.titleRoot Waving and Skewing - Unexpectedly in Micro-Gen_US
dc.typeEditorial Materialen_US

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